body{
    display: flex;
    flex-direction: column;
    justify-content: space-between;
}
header{
    width: 100%;
    height: 44px;
    border-bottom: 1px solid #ccc;
    display: flex;
    .option{
        flex: 1;
        text-align: center;
        line-height: 44px;
        font-size: 16px;
        color: #888;
    }
    .pitch{
        font-size: 18px;
        color: #0056c7;
        border-bottom: 2px solid #0056c7;

    }
}
#mainbox{
    flex: 1;
    overflow-y: scroll;
}
main{
    flex: 1;
    display: flex;
    flex-direction: column;
    align-items: center;
    background: #fff;
    .course{
        width: 95%;
        min-height: 200px;
        display: flex;
        flex-direction: column;
        background: #fff;
      
        .txt{
            line-height: 30px;
           font-size: 18px;
            margin: 10px 0;
        }
        .img{
            width: 100%;
            height: 200px;
            box-shadow:1px 1px 5px 0 #000;
            border-radius: 15px;
            overflow: hidden;
            position: relative;
            img{
                width: 100%;
                height: 200px;  
            }
            .texts{
                width: 100%;
                height: 50px;
                background: rgba(255, 255, 255,.8);
                position: absolute;
                left: 0;
                bottom: 0;
                padding: 0 20px;
                font-size: 14px;
               
                .txtTop{
                    font-size: 18px;
                }
            }
        }
    }
    .curriculum{
        width: 95%;
        min-height: 150px;
        display: flex;
        flex-direction: column;
        background: #fff;
      
        .curriculumtxt{
            line-height: 30px;
            font-size: 18px;
            margin: 10px 0;
        }
        .curriculumimg{
            width: 100%;
            height: 150px;
            background: url('../../assets/imgs/part4.png') no-repeat center;
            background-size: cover;
            box-shadow:1px 1px 5px 0 #000;
            border-radius: 15px;
            margin-bottom: 20px;
            overflow: hidden;
            position: relative;
            img{
                width: 100%;
                height: 150px;  
            }
            .curriculumtexts{
                width: 100%;
                height: 50px;
                background: rgba(255, 255, 255,.8);
                position: absolute;
                left: 0;
                bottom: 0;
                padding: 0 20px;
                font-size: 14px;
                .curriculumtxtTop{
                    font-size: 18px;
                }
            }
        }
    } 
}
#box{
    width: 100%;
    height: 400px;
    border: 1px solid #888;
}